SEO Optimization] The role of nofollow tags in SEO

There is a tag involved in the optimization process of a websitenofollow tagThen it plays what factors in the optimization of the site? The so-called nofollow tag, is the link of the a tag, a link tag to add nofollow after the initiative to tell the search engine, do not go to crawl this link as well as the transfer of weight.

First, nofollow tag of several forms of adding

The nofollow tag has a total of three forms of link addition:
1. rel=”external”
The meaning of this attribute is to tell the search engine, this link is not a link to this site, in fact, the role is equivalent to target=‘_blank’.
2、rel=”external nofollow”
This added form is equivalent to tell the search engine: this link is not a link to this site, do not crawl and do not pass the weight.
3. rel=”nofollow”
This form of addition actively tells search engines not to pass weight to this link.

Second, the reasonable application of nofollow

For the use of website nofollow includes: the website's record number, technical support, the station store, the station contact customer service and a series of outbound links.
These are required to add nofollow tag links, webmasters can also choose their own, that no weight and bring no weight, the user does not need the page to add nofollow tags, nofollow tags can be used reasonably to reduce the loss of site weight unnecessarily, so that the site weight in the need to focus on the key places of ranking.

Third, how to see whether the link to add nofollow tag

1, you can open the source code of the website page, query nofollow, if there is to see if the link is added correctly, there is no nofollow tag is appropriate and reasonable to add.
Fourth, nofollow tags are very important forSEO optimizationrole of
1, the code to simplify, cater to the search engine rules, enhance the search engine rating of the site, thereby enhancing the site's traffic weight.
2, add nofollow tag, is conducive to the concentration of site weight, the dispersion of the loss of site weight back.